高效液相色谱-串联质谱法测定粮谷中三氟羧草醚残留量  

Determination of Acifluofen Residues in Cereals by HPLC-MS

作　　者：李刚[1,2] 李淑娟[2] 李晓娟[2] 陈冬东[2] 蔡会霞[2] 陈磊[2] 王东伟[2] 李重九[1] 

机构地区：[1]中国农业大学理学院,北京100094 [2]中国检验检疫科学研究院,北京100123

出　　处：《农药》2009年第5期362-364,共3页Agrochemicals

摘　　要：建立了大豆、大米、糙米和毛豆中三氟羧草醚残留量的高效液相色谱-串联质谱法。样品加水浸泡后用乙腈振荡提取,提取液经净化后,采用电喷雾电离负离子[ESI(-)]、多反应监测(MRM)模式检测,基质添加外标法定量。在添加质量分数2～20μg/kg范围内,三氟羧草醚在各种基质中回收率为80.1%～97.5%,多次测定相对标准偏差(RSD)小于7.4%。三氟羧草醚在各种基质中的测定低限均为2μg/kg。The determination method of acifluorfen residues in soybean, rice, brown rice and the young soy by HPLC-MS was established. Samples by adding water after soaking are extracted with acetonitrile. After purifying, the residues were analyzed with electrospray ionization[ESI（-）], multiple reaction monitoring（MRM） mode of detection, external standard method with adding matrix for quantification. With spiked concentration between 2 and 20μg/kg, recovery in various matrixes is between 80.1 and 97.5%, and the relative standard deviation（RSD） by repeated determination less than 7.4%. The limited of quantification of this method in various matrixes is 2 μg/kg.

关 键 词：液相色谱 串联质谱 三氟羧草醚 粮谷 基质添加 

分 类 号：TS210.7[轻工技术与工程—粮食、油脂及植物蛋白工程]